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Category:   OS (UNIX)  >   NetBSD Vendors:   NetBSD
NetBSD Bugs in Kernel, Networking, and Application Code May Let Local Users Deny Service or Gain Elevated Privileges
SecurityTracker Alert ID:  1015132
SecurityTracker URL:  http://securitytracker.com/id/1015132
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Nov 1 2005
Impact:   Denial of service via local system, Denial of service via network, Disclosure of system information, Disclosure of user information, User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 2.0.3
Description:   Some vulnerabilities were reported in NetBSD. A local user may be able to deny service or potentially obtain elevated privileges.

The IPsec-AH calculation is always based on the same key in AES-XCBC-MAC.

A user may be able to specify negative offsets when reading the message buffer to read arbitrary kernel memory.

The imake(1) function uses unsafe temporary files, which may allow a local user to gain elevated privileges.

A bug exists in the sh(1) command, affecting big endian systems. A buffer underflow may occur when evaluating output from a back tick substitution, causing the system to crash.

Several other kernel and networking bugs exist that may allow a local user to deny service. A remote user may be able to deny service in certain cases.

Impact:   A local user may be able to cause the system to crash.

A local user may be able to obtain elevated privileges.

In some cases, a remote user may be able to cause denial of service conditions.

Solution:   The vendor has issued a fixed version (2.0.3), available as a source only update.

The list of download sites is available at at:

http://www.NetBSD.org/mirrors/

Vendor URL:  www.netbsd.org/ (Links to External Site)
Cause:   Access control error, Boundary error, Exception handling error, Input validation error, Randomization error

Message History:   None.


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